#include"mystdio.h"
#include<sys/types.h>
#include<sys/stat.h>
#include<fcntl.h>
#include<unistd.h>
#include<stdio.h>
int main(){
 mFILE*f= mfopen("t3.txt","a");
 //dup2(f->fd,1);
 char arr[6]="aaaa\n";
int cnt=250;
 while(cnt--)
 {mfwrite(arr,4,f);
 }
 mfclose(f);
 return 0;
}
